Lignans of Trachelospermum asiaticum were isolated from the polar fraction of the methanol percolate, and the structures were determined. Trachelosiaside (matairesinol 5'-C-β-D-glucoside)was isolated as the first naturally occurring C-glucoside of lignan. Glucosides of dihydrodehydrodiconiferyl alcohol and bisdihydrosiringenin were obtained as minor components, along with many glucosides and gentiobiosides of arctigenin, matairesinol, trachelogenin, and nortrachelogenin.